Electric heater



March 6, 1,928.

W. C. HUNT ELECTRIC HEATER Filed March 12, 1927 INVENTBR- Patented Mar. 6, 1928.

UNITED STATES PATENT OFFICE.

WILLIAM C. HUNT, 0F TORONTO, ONTARIO, CANADA.

ELECTRIC Application filed March 12, 1927, Serial No.

This invention relates to heaters of the type in which a reflector is supported on a stand and an electric heating element is supported from and in front of the reflector, and my objects are firstly:to prove a simple and cheap construction whereby the heating element is quickly and easily replaceable. Sec ondly :to provide means whereby the heat or may be used for simple cooking operations, and thirdly to so construct the stand that the heater will not lie face down on the floor.

I attain my objects by means of the con structions hereinafter described and illus trated in the accompanying drawings in which Fig. 1 is a side elevation, partly broken away, of a heater constructed in accordance with my invention showing the device when used as a heater;

Fig. 2 a similar view showing the device in one of the positions in which it is used for cooking;

Fig. 3 a plan view, partly broken away, with the parts in the position shown in Fig. 2;

Fig. 4 a plan view of the base and stand; and

Fig. 5 a sectional detail illustrating the method of making the connections with the heating element.

In the drawings like numerals of reference indicate corresponding parts in the different figures.

1 is the stand, which is provided with the base 2 having a forward extension 3 which terminates in a rounded point 4. This extension is intended to prevent the overbalancing of the device when a kettle is in position on the grid and the latter is extended. as shown in Fig. 2. The rounded point 4 which is normally out of contact with the ground is intended to cause the device, in case it is tipped over, to be thrown to one side or the other in such a manner that the reflector plate, hereinafter referred to, will not be presented face down to the'floor over the heating element.

The stand may be of any suitable design, and a hollow head 5 is secured to its upper end, preferably by means of a pivot bolt 6. This head is secured, by means of the screws 7. to the back of a reflector plate 8. This refiector plate is of circular concave form, its optical axis is laterally directed and its concave surface is preferably highly polished.

HEATER.

174,568, and in Canada February 17, 1927.

The heating element is supported centrally thereof in the following manner.

To the back of the reflector plate is secured a block 9 of insulating material. Through this block 9 pass the terminals 10, to the outer ends of which are secured the ends of the conductors 11. These conductors pass out through an insulating bushing 12 inserted in a hole in the back of the hollow head 5. Connected to the inner ends of the terminals 10, and preferably integral therewith, are the arms 13, which arms pass through holes in the reflector plate and extend laterally and then outwardly as shown. To these arms are detachably secured, by means of the screws 14, the metal core ends 15. These core ends are recessed to receive the ends of the hollow core 16 of insulating material, on which is wound the resistance wiring 17 The ends of the wiring are connected to the core ends 15, by means of the screws 18. There is thus an electrical connection formed between the resistance wiring and the conductors 11.

Whenever it is necesary to renew the heating element, the core ends 15 are readily disconnected from the arms 13 and the core, with its ends, removed. Anew length of resistance wiring is then readily placed in position.

To adapt the device for light cooking I provide the metal grid 19. which is provided with lugs 20 secured to the reflector plate 7 by means of screws or bolts. This grid is located above the heating element, and is so positioned that it will receive both direct and reflected heat rays.

As the grid, when the device is used as a heater, must be entirely contained within a guard, I provide it with an extension 21, which is hinged on the main part of the grid by means of the pivots 22. When the part 21 is extended, it rests upon the cross bar 23 formed at the outer end of the part 19. The extension 21, when thrown back, rests upon a stop 24: secured to the reflector plate. As it is of grid form, when in this position, it will serve as a toast rack, and pins 25 are provided against which the lower edge of apiece of. toast may rest. At each side of the extension 21 an insulated handle 26 is provided by means of which the extension may be operated.

I prefer to brace the outer end of the grid 19, and for this purpose I provide a brace 27, which is preferably formed as an open till frame, and is provided at its outer upper end with a lug 28 secured, by means of a screw, to the grid, while its lower end is provided with the lugs 99 secured, by means of screws, to the reflector plate.

in order that toast may be made both above and below the heating element l provide the toast raclt 30 which is hinged at the front of the reiiector below the heating element, and at its outer end is releasably connected with the front of the grid 1.9 by means oi. the spring catch Bl. iln insulating liandle32 provides means whereby this rack may be operated. li'eterably the lower end of the toast racl; 30 is pivotally connected with arms 33 rigidly connected with the lower part of the brace 27.

When the device is in use as a heater, a wire guard 34- ot cage-like term is connected with the rim of the retlectm: plate. To enable this guard to be readily disconnected, when the device is to be used tor cooking, I divide its rim 35 and bend up its ends to form linger grips the rim of the retlector plate is formed with an inwardly projecting flange 37. By pressing together the finger grips 36, the rim 35 may be contracted sutliciently to enable it to pass-within the flange 3?. Un releasing the linger grips, the arms will expand into engagement with the flange 37, thus holding the grid in place. It is, however, readily removed by reversing the operations described whenever the device is to be used tor cookin V v hat ll claim is:

1. An electric heater comprising a reflector plate; a block of insulating material secured to the plate; terminals for the connection of conductors secured thereto and accessible at-the back of the plate; arms at the front of the plate connected with the terminals; a core of insulating material for resistance wiring; resistance wiring carried thereby; metal :aps adapted to disengageably receive the ends of the core; means for detachably securing said caps to the aforesaid arms; and means for detachably securing the ends of the resistance wiring tosaid metal caps.

2. An electric heater comprising a re flector plate; a block of insulating material secured to the back of the plate: terminals tor the connection of conductors secured thereto; a hollow head secured to the back of the plate enclosing the insulating block; an insulating bush for the passage of conductors extending through the back of the head; arms at the trout of the plate connected with the terminals, the plate being cut out to avoid contact between the plate and the arms; a core of insulating material for resistance wiring; resistance wiring carried thereby; metal caps adapted to disengageably receive the ends of the core; means for detachably securing said caps on said menses arms; and means for detachably securing the ends of the resistance wiring to the metal caps.

3. An electric heater comprising a concave reflector having its optical axis laterally directed; an electric heating element supported therein; a grid secured to the reflector plate above the element and extending outwardly beyond the plane of its rim, said grid having a substantially horizontal upper surface; and a part connected with the gridadapted to be extended forwardly to extend the horizontal upper surface of the grid, or moved towards the reflector to permit the positioning of a guard.

4c. An electric heater comprising a confave reflector having its optical axis laterally directed; an electric heating element supported therein; a grid secured to the reflector plate above the element and extendin outwardly beyond the plane of its rim, said grid having a substantially horizontal upper surface; and a part connected with the grid adapted to be extended forwardly to extend the horizontal upper'surface of the grid or inclined inwardly above the grid and element to form a toastrack.

5. An electric heater comprising a corn cave reflector having its optical axis laterally directed; an electric heating element supported therein; agrid secured to the reflector plate above the element and extending outwardly beyond the plane of itsrim, said grid having a substantially horizontal upper surface; and a brace member secured to the reflector plate below the'element and to the outer part of the grid.

6. An electric heater comprising a concave reflector having its optical axis laterally directed; an electric heating element supported therein; a grid secured to the refiectorplate above the element and extending outwardly beyond the plane of its rim, said grid having a substantially horizontalupper surface; a toast rack hingedly supported at its inner end from the reflector plate below the-heat ing element; and means for releasably securng the'outer end of the said rack to the gri 7. An electric heater comprising a concave reflector having its optical axis laterally directed; an electric heating element supported therein; a grid secured to the reflector plate above the element and extending outwardly beyond the plane of its rim, said grid having a substantially horizontal upper surface; a part connected with the grid adapted to be extended forwardly to extend the horizontal upper surface of the grid or inclined inwardly above the grid and element to form a toast rack; a toast rack hingedly supported at its inner end from the reflector platebelow the heating element; and means for detachably securing the outer end of the-said rack tothe grid.

8. An electric heater comprising a concave reflector having its optical axis laterally directed; an electric heating element supported therein; a grid secured to the reflector plate above the element and extending ontwardly beyond the plane of its rim, said grid having a substantially horizontal upper surface; a brace member secured to the reflector plate below the element and to the outer part of the grid; a toast rack hingedly supported at its inner end from the reflector plate below the heating element; and means for detachably securing the outer end of the said rack to the grid.

9. An electric heater comprising a circular concave reflector plate having its optical axis laterally directed; a centrally positioned heating element; and a substantially horizontal grid supported above the heating element adapted to intercept both direct and reflected heat rays.

10. An electric heater comprising a reflector plate; an electric heating elei' 'ient supported on and in front of said plate; and a stand to which the back of the reflector plate is secured, the base of the stand being provided with a forward projection normally out of; contact with the ground and shaped at its outer end to cause the stand to take a lateral rant to one side or the other when the projection engages the ground. through the tipping forwardly of the stand.

Signed at Toronto, Canada, this 10th day of March, 1927.

WILLIAM C. HUNT. 

